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MP2212 Datasheet(PDF) 4 Page - Monolithic Power Systems |
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MP2212 Datasheet(HTML) 4 Page - Monolithic Power Systems |
4 / 14 page MP2212 – 16V, 3A, 600kHz SYNCHRONOUS STEP-DOWN CONVERTER MP2212 Rev. 1.01 www.MonolithicPower.com 4 2/22/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. PIN FUNCTIONS 8-SOICE Pin # 10-QFN Pin # Name Description 5 6 VCC Bias Supply. This supplies power to both the internal control circuit and the gate drivers. A decoupling capacitor to ground is required close to this pin. 3 4, 7 IN Input Supply. This supplies power to the high side switch. A decoupling capacitor to ground is required close to this pin to reduce switching spikes. 6,7 3, 8 SW Switch Node Connection to the Inductor. These pins connect to the internal high and low-side power MOSFET switches. All SW pins must be connected together externally. 2 2, 9 GND, Exposed Pad Ground. Connect these pins with larger copper areas to the negative terminals of the input and output capacitors. Connect Exposed Pad and GND pin to the same plane. 4 5 BS Bootstrap. A capacitor between this pin and SW provides a floating supply for the high-side gate driver. 1 1 FB Feedback. This is the input to the error amplifier. An external resistive divider connected between the output and GND is compared to the internal 0.8V reference to set the regulation voltage. 8 10 EN/SYNC Enable and Frequency Synchronization Input Pin. Forcing this pin below 0.4V shuts down the part. Forcing this pin above 1.6V but no more than VCC turns on the part. Attach to VCC with a 100kΩ pull up resistor for automatic start-up. Applying a 500kHz to 2MHz clock signal to this pin synchronizes the internal oscillator frequency to the external source. Don’t apply a voltage more than VCC to this pin. |
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